Exploring Modems
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Questions and Answers

Which term describes the process of converting an analog signal into a digital signal?

  • Binary Arithmetic
  • Byte
  • Codec
  • Modem (correct)

    • What is the most common arrangement of bits in a group called?

  • Modem
  • Byte (correct)
  • Codec
  • Binary Arithmetic

    • In binary arithmetic, what does each bit within a group represent?

  • A power of eight
  • A power of ten
  • A power of sixteen
  • A power of two (correct)

    • Which of the following is the correct formula for calculating the number of bits per level for a signal with L levels?

    <p>Number of bits per level = log2(L)</p> Signup and view all the answers

    How many bits are needed per level for a signal with eight levels?

    <p>3 bits</p> Signup and view all the answers

    Which of the following is a valid IPv4 address?

    <p>192.168.0.1</p> Signup and view all the answers

    How many possible unique IPv4 addresses are there?

    <p>4,294,967,296</p> Signup and view all the answers

    True or false: Each level of a signal with L levels requires log2L bits.

    <p>True</p> Signup and view all the answers

    True or false: An IPv4 address consists of four octets separated by periods.

    <p>True</p> Signup and view all the answers

    True or false: An IPv4 address must contain three periods.

    <p>False</p> Signup and view all the answers

    True or false: IPv6 addresses have 32 bits.

    <p>False</p> Signup and view all the answers

    True or false: Modem stands for MOdulation + DEModulation.

    <p>True</p> Signup and view all the answers

    True or false: Codec is used for compression and decompression of audio, video, or data.

    <p>True</p> Signup and view all the answers

    True or false: In binary arithmetic, each bit within a group represents a power of ten.

    <p>False</p> Signup and view all the answers

    Match the following IP versions with their corresponding bit lengths:

    <p>IPv4 = $32$ bits IPv6 = $128$ bits</p> Signup and view all the answers

    Match the following binary representations with their corresponding IP versions:

    <p>$00000000.00000000.00000000.00000000$ = IPv4 $00000000.00000000.00000000.00000000.00000000.00000000.00000000.00000000$ = IPv6</p> Signup and view all the answers

    Match the following IP addresses with their corresponding versions:

    <p>$1.2.3.4$ = IPv4 $2001:0db8:85a3:0000:0000:8a2e:0370:7334$ = IPv6</p> Signup and view all the answers

    Match the following IP address formats with their corresponding versions:

    <p>$x.x.x.x$ = IPv4 $xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:xxxx$ = IPv6</p> Signup and view all the answers

    Match the following terms with their descriptions:

    <p>Modem = Converts the analogue signal back into a digital signal Codec = Compression &amp; decompression for a particular audio / video / data Binary System = Describes everything using two values or states: on or off, true or false, yes or no, 1 or 0 Bit = Each of the switches in a computer, a short for binary digit</p> Signup and view all the answers

    Match the following values with their corresponding binary representations:

    <p>64+32+8+4+2 = 01101110 128+64+16+8+2+1 = 1001111 32+16+4+2+1 = 0011111 64+32+8+1 = 0101001</p> Signup and view all the answers

    Match the following terms with their binary arithmetic representations:

    <p>Bit = $2^0$ Byte = $2^3$ $n$-bit Binary Number = $2^{n-1}+2^{n-2}+...+2^1+2^0$</p> Signup and view all the answers

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